![]() The main reasons why an un-pressurized room will not protect the occupants for very long is that the room “breaths.” In other words, it leaks air both in and out through the cracks as the external atmospheric pressure fluctuates – due wind or other atmospheric variables like temperature and barometric pressure swings due to approaching weather fronts. These standards dictate the differential pressure (overpressure) in the safe room (protected space) as well as the design of the NBC filter/ventilation system. Department of the Army – Corps of Engineers has standards by which NBC airborne toxic free areas must comply. They have strict standards in place governing both the construction of the room and the ventilation equipment protecting the room.įor protection of some of our military personal and government officials, the U.S. Most governments tend to only recommend emergency procedures that can be afforded by all their citizens.Īs a contrast to most governments, both Switzerland and Israel require, and subsidize the cost of, NBC safe rooms and blast shelters in residential dwellings and commercial buildings. ![]() Although the tape and plastic method would offer some immediate short term protection from low level toxins at low concentrations, it would be, at best, a short term solution. population, the government suggests duct tape and plastic, then wait for further official instruction. This is not the case today.įor protection of the U.S. In the past, the United States Government has poured extensive resources into providing the best information for the protection of its citizens from NBC warfare agents. A nuclear, biological, and chemical (NBC) safe room protects the occupants from inhaling harmful or deadly airborne toxins such as very fine particles of radioactive fallout, biological toxins, and chemical agents. ![]()
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